The event, however, is international in scope. According to organizers, the day includes celebrations in 1,500 cities in 40 countries. Area residents can take the pledge by signing up online.

Local events will include free bus rides on connectors and shuttles in Frederick County and morning prize drawings and giveaways at Bethesda, Friendship Heights, Silver Spring and Twinbrook Metro stations;

Commuter Connections also is encouraging participants to join in the Capital Bikeshare Birthday Bash. The event celebrating the one-year anniversary of the regional cycling program is from 6 to 9 p.m. Thursday at Yards Park, on the Anacostia River near Nationals Park. There will be live music, moon bounces, food, games and prizes.

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Comments our editors find particularly useful or relevant are displayed in Top Comments, as are comments by users with these badges: . Replies to those posts appear here, as well as posts by staff writers.